Atmel ATmega32M1 User Manual

5
7647H–AVR–03/12
Atmel ATmega16/32/64/M1/C1
1.1 Pin Descriptions
:
Table 1-1. Pin out description
QFN32 Pin
Number Mnemonic Type Name, Function and Alternate Function
5GNDPowerGround: 0V reference
20 AGND Power Analog Ground: 0V reference for analog part
4 VCC Power Power Supply
19 AVCC Power
Analog Power Supply: This is the power supply voltage for
analog part
For a normal use this pin must be connected.
21 AREF Power
Analog Reference : reference for analog converter . This is
the reference voltage of the A/D converter. As output, can be
used by external analog
ISRC (Current Source Output)
8 PB0 I/O
MISO (SPI Master In Slave Out)
PSCOUT2A (PSC Module 2 Output A)
PCINT0 (Pin Change Interrupt 0)
9 PB1 I/O
MOSI (SPI Master Out Slave In)
PSCOUT2B (PSC Module 2 Output B)
PCINT1 (Pin Change Interrupt 1)
16 PB2 I/O
ADC5 (Analog Input Channel 5 )
INT1 (External Interrupt 1 Input)
ACMPN0 (Analog Comparator 0 Negative Input)
PCINT2 (Pin Change Interrupt 2)
23 PB3 I/O
AMP0- (Analog Differential Amplifier 0 Negative Input)
PCINT3 (Pin Change Interrupt 3)
24 PB4 I/O
AMP0+ (Analog Differential Amplifier 0 Positive Input)
PCINT4 (Pin Change Interrupt 4)
26 PB5 I/O
ADC6 (Analog Input Channel 6)
INT2 (External Interrupt 2 Input)
ACMPN1 (Analog Comparator 1 Negative Input)
AMP2- (Analog Differential Amplifier 2 Negative Input)
PCINT5 (Pin Change Interrupt 5)
27 PB6 I/O
ADC7 (Analog Input Channel 7)
PSCOUT1B (PSC Module 1 Output A)
PCINT6 (Pin Change Interrupt 6)
28 PB7 I/O
ADC4 (Analog Input Channel 4)
PSCOUT0B (PSC Module 0 Output B)
SCK (SPI Clock)
PCINT7 (Pin Change Interrupt 7)
Note: 1. On the first engineering samples (Parts marked AT90PWM324), the ACMPN3 alternate
function is not located on PC4. It is located on PE2.

Atmel ATmega32M1 Specifications

General

Brand	Atmel
Model	ATmega32M1
Category	Microcontrollers
Language	English